cupro-nickel Public Deposited
Alloy of copper with more nickel than in the 1857-64 cents; the common proportion in the USA is 25% nickel, 75% copper, in other countries 20% nickel, 80% copper.
- Breen Encyclopedia
Alloy of copper with more nickel than in the 1857-64 cents; the common proportion in the USA is 25% nickel, 75% copper, in other countries 20% nickel, 80% copper.
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